摘要
研究了在发散光束中使用色散元件的小型Offner光谱成像系统,分析了Offner凸光栅光谱成像系统和Offner曲面棱镜光谱成像系统的优缺点,与传统准直光束中使用光栅或棱镜的方法相比,Offner光谱成像系统具有体积小、质量轻、无谱线弯曲、色畸变小的特点。给出了两种系统的设计结果,并研究了滤除二级和高级次光谱的方法,给出了与Offner光谱成像系统匹配的不同形式的像方远心前置光学系统,可满足微小卫星超光谱成像仪的要求。
A compact Offner spectral imaging system using dispersive elements in divergent beam was designed, and the advantages and disadvantages of the Offner spectral imaging system with convex grating and curved prism were analyzed. Compared with spectral imaging systems with grating or prism, Offner spectral imaging systems have characteristics of small volume, light weights, free spectral smile and little keystone. The design results of two kinds of spectral imaging systems, and method to filter secondary spectrum and high power spectrum were given. The results show that the system can satisfy the need of hyperspectral imager, and can be mounted on small or mini satellites.
出处
《光学精密工程》
EI
CAS
CSCD
北大核心
2005年第6期650-657,共8页
Optics and Precision Engineering
基金
应用光学国家重点实验室开放基金
关键词
光谱成像系统
超光谱
二级光谱
凸光栅
曲面棱镜
spectral imaging system
hyperspectrum
secondary spectrum
convex grating
curved prism
